@misc{indiciae8c5497356503,
  title = {Differential Phase Interferometry with the Keck Telescopes},
  author = {Vasisht, Gautam and Colavita, M. Mark},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20080017927},
  note = {Source identifier: 20080017927}
}